Question

public class WrapperTest {     static {         print(10);     }      static void print(int x) {         System.out.println(x);         System.exit(0);     } } 

In the above code System.exit(0) is used to stop the program. What argument does that method take? Why do we gave it as 0. Can anyone explain the concept?

Answer 1

From the JAVA Documentation:

The argument serves as a status code; by convention, a nonzero status code indicates abnormal termination.

And Wikipedia adds additional information.